中国激光, 2017, 44 (7): 0703020, 网络出版: 2017-07-05
基于WS2可饱和吸收体的被动调Q Tm,Ho∶LLF激光器 下载: 595次
WS2 Saturable Absorber for Passively Q-Switched Tm,Ho:LLF Lasers
激光技术 WS2可饱和吸收体 被动调Q激光器 Ho∶LuLiF4激光器 低阈值激光器 laser technique WS2 saturable absorber passively Q-switched lasers Tm Tm Ho∶LuLiF4 lasers low threshold lasers
摘要
利用二维过渡金属材料WS2作为2 μm波段可饱和吸收体, 采用典型的X型四镜腔结构, 实现了Tm,Ho∶LuLiF4激光器低阈值被动调Q运转。实验结果表明, 吸收功率为260 mW时开始启动调Q运转, 吸收抽运功率大于650 mW时, 调Q激光脉冲进入稳定运转。抽运功率为2000 mW时, 在中心波长1895 nm波段输出功率为88 mW, 典型脉冲宽度为4 μs, 重复频率为16.89 kHz, 对应最大单脉冲能量为5.21 μJ。结果表明, WS2材料可以作为2 μm固体激光器的可饱和吸收体。
Abstract
The WS2 is used as a saturable absorber in 2 μm band. A low-threshold passively Q-switched Tm, Ho∶LuLiF4 laser with a typical X-type four-cavity structure is demonstrated. The experimental results show that the Q-switched operation starts at the absorbed pump power of 260 mW and becomes stable when it is over 650 mW. When the absorbed pump power is 2000 mW, the output power is 88 mW, corresponding to the typical pulse duration of 4 μs, the repetition frequency of 16.89 kHz, and the maximum single pulse energy of 5.21 μJ. The results show that the WS2 material can be used as a saturable absorber for passively Q-switched lasers in 2 μm band.
令维军, 夏涛, 董忠, 路飞平, 刘勍, 赵小龙, 李可, 王勇刚. 基于WS2可饱和吸收体的被动调Q Tm,Ho∶LLF激光器[J]. 中国激光, 2017, 44(7): 0703020. Ling Weijun, Xia Tao, Dong Zhong, Lu Feiping, Liu Qin, Zhao Xiaolong, Li Ke, Wang Yonggang. WS2 Saturable Absorber for Passively Q-Switched Tm,Ho:LLF Lasers[J]. Chinese Journal of Lasers, 2017, 44(7): 0703020.